The Seascape M8242 6' Bench with arms has an aluminum frame with HDPE (high-density polyethylene) lumber for the seat. HDPE material is made from post-consumer bottle waste such as milk jugs and detergent bottles, making this an environmentally friendly product. The M82042 is a transitional design and can be surface mounted with an available mounting kit sold separately. This bench is not only good looking but extremely comfortable as well. The frame is available in any Texacraft powder coat finish to coordinate with any one of 4 lumber colors to select from.